Three couples are staying at a lakeside cottage with their children. They want them to prepare intensely for a prestigious high school's entrance exam with the help of a private tutor. One night, one of the wives confesses to her husband that she has killed his mistress.
Unfortunately the movie The Lakeside Murder Case is not yet available on HBO Max.
| Directing | Shinji Aoyama | Director |
| Camera | Masaki Tamura | Director of Photography |
| Production | Takenori Sentô | Producer |
| Art | Tsuyoshi Shimizu | Art Direction |
| Editing | Shinji Aoyama | Editor |
| Writing | Shinji Aoyama | Writer |
| Production | Hiroyoshi Koiwai | Executive Producer |
| Writing | Masaki Fukasawa | Writer |
| Sound | Nobuyuki Kikuchi | Sound |
| Sound | Hiroyuki Nagashima | Original Music Composer |
| Writing | Keigo Higashino | Novel |
